Receive multicast packets with AT + CIPSTART

[akarg96]

I have a question about UDP multicast.
Execute AT + CIPSTART = "UDP", "192.168.0.2", 0, 12345, 2 and OK will be displayed on the serial monitor. When I send UDP packets with PacketSender, + IPD, 5, hello is displayed.
When AT + CIPSTART = "UDP", "239.192.1.2", 0, 12345, 2 is executed, the serial monitor displays OK, and it is considered that the socket was correctly created. However, the PacketSender does not display + IPD when sending UDP packets to a multicast address.
Does AT firmware not support multicast?
Also, I don't want to use AT + MDNS.

I use google translation.
Thank you.

[Helen L]

It seems that ESP32 AT does not support multicast for now, maybe it should be added in the future.

[ESP_XCGuang]

Please try it again using the attachment

[akarg96]

Thanks Helen L and xcguang.
I understand that ESP-AT does not support multicast.
Using the given bin file, the AT + CIPSTART command definitely received the multicast.

[ESP_XCGuang]

Hi akarg96,
thanks for your feedback, we will sync at GitHub ASAP, if you have any question about esp-at, you can report it at https://github.com/espressif/esp-at/issues

[Bitloose]

I can't believe that it isn't noted that the ESP-12 and other WiFi modules don't support UDP multicast!!!
After hours of tests and searches I came to the same conclusion.
Hours of work that many developers have suffered because no one at Espressif bothered to update the documents!

Would you PLEASE publish what the recommended course of action is?